/*
 * Copyright 2008-2010 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

package jrebel.comm;

import java.io.Serializable;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.IOException;

public abstract class Command implements Serializable {
	public static final byte ERROR = 0;
	public static final byte EXIT = 1;
	public static final byte MESSAGE = 2;
	public static final byte SUCCESS = 3;
	public static final byte SETPASSWORD = 4;
	public static final byte LOGINRESULT = 53;
	public static final byte CONF = 6;
	public static final byte RETRANSFORM_CLASS = 7;

	public static final byte FIRST_COMMAND = ERROR;
	public static final byte LAST_COMMAND = RETRANSFORM_CLASS;

	protected byte type;

	protected Command(byte type) {
		if (type < FIRST_COMMAND || type > LAST_COMMAND) {
			throw new IllegalArgumentException();
		}
		this.type = type;
	}

	protected abstract void write(ObjectOutput out) throws IOException;

	protected abstract void read(ObjectInput in) throws IOException,
			ClassNotFoundException;

	public byte getType() {
		return type;
	}
	public String toString(){
		String cla= getClass().getName() ;
		if( cla.indexOf(".") > 0 )
			return cla.substring(cla.lastIndexOf(".")+1) ;
		return cla ;
	}
}
